<!DOCTYPE html>
<html lang="en">

<head>
  <meta charset="UTF-8" />
  <meta http-equiv="X-UA-Compatible" content="IE=edge" />
  <meta name="viewport" content="width=device-width, initial-scale=1.0" />
  <title>Document</title>
</head>
<script src="../../dist/vue.js"></script>
<script>
</script>

<body>
  <div id="demo">
    <template>
      <!-- hahaha -->
      <div>{{current}}</div>
    </template>
  </div>
  <script>
    var app = new Vue({
      el: "#demo",
      data: {
        current: 1,
        name: "age",
      },
    });
    app.current++;
    // setTimeout(() => {
      // app.current++;
      // app.$data.counter++
    // }, 10000);
  </script>
</body>

</html>